Improvement in water-gages for steam-boilers



UNITED .STM-ns Parana? @errer/i.

JAMES MORRISON, OF TORONTO, CANADA.

IMPROVEMENT IN WATER-GAGES FOR STEAM-BOILERS.

Specification forming part of Letters Patent No. 149,597, dated April 14, 1874; application iilcd February 21, 1874.

To all whom tt may concern:

Beit known that I, J AMES Monatsen, of the city of Toronto, in the county of York, in the Province of Ontario, Canada, brass-founder, have invented new and useful Improvements in Water-Gages for Steam-Boilers; and I do hereby declare that the following is a full, clear, and exact description of the saine.

This invention relates to that description of water-gage in which is a glass tube by which the exact height of water in the boiler can be seen as it rises to a corresponding height in the glass tube. The gagel is placed on the boiler so that when the water is at the proper height in the boiler it will be about the middle of the glass tube. In attaching the ordinary watergage with glass tube on the boiler it is found to be a matter of considerable difficulty to get the' two parts of the gage to range accurately with` each other, so that the tube will go in easily and have the same thickness of packing all round. The ditliculty herein alluded to arises chiefly from the circumstance of there being only one direction of movement for adjustment, while in my improved adjustable water-gage there are two dilferent directions of movement for adjustment, thereby affording greater facility for the perfect adjustment of these parts and in diminished breakage of tubes, lessening the expense of maintenance.

In the accompanying drawings the same let-- ters of reference indicate the same parts in all the views, and also in the following' speciiication.

Figure 1 is a front view of my improved adjustable water-gage A, the glass tube; B, the upper socket; C, the lower socket; D, the upper cock, with chamber d; E, the lower cock,

,with chamber c, and showing the sockets B O screwed into the chambers d e of the cocks D E. The upper part of this drawing is shown in section.

Fig. 2 is a ground view or plan of socket C and cock E, with chamber c, valve O, and valvestem O', shown in section through the line a b of Fig. l, and illustrates very clearly my invention.

Fig. 3 is a ground view or plan in section, showing another mode of construction in which the same facilities for adjustment are obtained as in the other method shown in Figs. l and 2.

In this ligure (3) the socket shown may be supposed either that of B or C', which is constructed with a project-in g body or barrel, b, or c. The cock shown may be supposed either that of D or f', with chamber d or e, into which chamber d or e the aforesaid barrel b or c is turned, and fitted steam and water tight. The valve O and valve-stem Ol are constructed as portions of the socket B or O in this method of construction. They are constructed as portions of the cock D or E in the former method of Figs. l and A2.

Returning to Fig. l, it will be seen that in tapping and screwing the cocks D E in the boiler-head F, it may, and does frequently, occur that the sockets B O do not range truly one with the other, and that an adjustment must be made by turning these parts until they do range truly with each other, so that the glass tube A will go freely into the sockets B O. It will be found that the sockets B C are adjustable in two directions: First, in the direction of the screw-threads on the cocks l) E; and, second, in the direction'of the screwthreads on the sockets B O, (this is more clearly seen in Fig. 2,) and thatby having both directions of adjustment the sockets B O are read'l y brought into the same range, so that the glass tube A will fit the sockets B O accurately, and will admit an equal thickness of packing all round the glass tube, which, when so placed and packed, is then in the most favorable position for use and for durability. The glass tube, when tightened up with an unequal space for packing, is strained and frequently breaks, either in the putting in or shortly afterward. My improved adjustable water-gage will consequently be much more economical than the common gage.

Referring to Fig. 3, which shows the other mode of construction, it will be seen that the sockets B B', instead of being screwed into the chambers el e of the cocks D E, as shown in Fig. 2, are constructed with a projecting body or barrel, b or c, which is turned and litted into the chamber d or e of the cock D or E', by which arrangement two distinct directions of movement for adjustment are ob tained, and which will be equally effect-ive in operation to the other mode of construction hereinlecre described.

I cla-im- D E', the sockets B C constructed with a pro- 1. The combination of the glass tube A, the jecting body or barrel, b or c, which is turned sockets B C, the cocks D E, with the chambers and tted into the chamber d or e of the cocks Z e, having the sockets B C screwed into the D E', as shown and described.

ehmnbers d e of the cocks D E, substantially J AMES MORRISON. as shown and set forth. Vtnesses:

2. The combination and arrangement of the HENRY NEVLLLE, glass tube A, the sockets B C', andthe cocks WILLIAM GILL. 

